US2794016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental cavity primer
Assignee: L D CAULK Co
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Filing: 1954-03-26
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Granted: 1957-05-28
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Expires: 1974-03-26
Abstract
No abstract record available.
Inventors
- 👤 John F Glenn
- 👤 John J Clancy
- 👤 Richard S Brenneman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:23
CPC Classifications
A; A61; A61K; A61K6/00; A61K6/80; A61K6/884; A61K6/887
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
142 words
AN ANHYDROUS DENTAL PRIMER COMPOSITION FOR USE IN FILLING TEETH WITH METHACRYLATE TYPE DENTAL FILLERS, CONSISTING ESSENTIALLY OF A SUBSTANTIALLY ANHYDROUS, UNPOLYMERIZED SOLUTION OF FROM ABOUT 5% TO ABOUT 50% BY WEIGHT OF AN ALPHA-BETA UNSATURATED ACID SELECTED FROM THE GROUP CONSISTING OF ACRYLIC, METHACRYLIC, ETHACRYLIC AND ALPHA-CHLORO ACRYLIC ACIDS, FROM ABOUT 0.1% TO ABOUT 2% BY WEIGHT OF AN ALPHA-BETA UNSATURATED ACID AMIDE SELECTED FROM THE GROUP CONSISTING OF ACRYLAMIDE, METHACRYLAMIDE AND METHYLOLACRYLAMIDE, FROM ABOUT 1% TO ABOUT 5% BY WEIGHT OF AN ANHYDRIDE SELECTED FROM THE GROUP CONSISTING OF ACRYLIC ANHYDRIDE AND METHACRYLIC ANHYDRIDE, AND A POLYMERIZABLE LIQUID MONOMER SOLVENT SELECTED FROM THE GROUP CONSISTING OF THE ALKYL ESTERS OF ACRYLIC AND METHACRYLIC ACIDS IN WHICH THE ALKYL GROUP CONTAINS FROM 1 TO ABOUT 6 CARBON ATOMS, SAID SOLVENT BEING IN SUFFICIENT AMOUNT TO DISSOLVE SAID ACID, AMIDE AND ANHYDRIDE.
References Cited (Backward Citations)
US2653140A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-27 | 1960-11-26 | 1961-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-27 | 1964-11-26 | 1965-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-27 | 1968-11-26 | 1969-05-28 | $7700.00 | Window Closed / Lapsed |